Oklahoma City is located in IECC Climate Zone 3A (Warm - Humid). Get accurate Manual J load calculations with official design temperatures for Oklahoma City.
Climate Zone 3A requires precise load calculations. Upload your Oklahoma City blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Oklahoma City's exact design temperatures (22°F winter / 94°F summer).
Enter your ZIP code to confirm it's in Oklahoma City and get climate zone details.
Official ASHRAE design temperatures for Oklahoma City, used for accurate Manual J load calculations.
Minimum insulation and window requirements for Oklahoma City per IECC 2021.
Energy Code: 2021 IECC
Upload your Oklahoma City blueprint and get a professional Manual J load calculation using official Zone 3A design temperatures. First report is FREE.
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